Low pressure cylinders/high pressure systems

[tunna]

Low pressure cylinders/high pressure systems

If its any use to anyone we use solid nylon bar
machined to fit in all three of Bulldogs cylinders

[julian]

Low pressure cylinders/high pressure systems

Was Spawns cylinder a 10 bar at 70 bar? Im still reading up on pneumatics and thats ringing alarm bells for me.

What about 10 bar cylinders at 16 bar? What needs to be done to make them safe?

[fwsorg]

Low pressure cylinders/high pressure systems

The answer to your question is in the first sentence of this thread, and strengthening rams is discussed in detail throughout this thread- worth reading- no point in repreating whats written above.

[julian]

Low pressure cylinders/high pressure systems

Im getting an 80mm bore 160 mm stroke 10 bar ram. As a first go for someone who has never used pneumatics before, using a ram at full pressure isnt sensible. As it is, at 10 bar it can lift half a tonne. I was wondering as to whether operation at 16 bar would involve less extensive modification.

[Guest]

Low pressure cylinders/high pressure systems

Replace the cast ends and the tie rods.

[jeremy_cuss]

Low pressure cylinders/high pressure systems

Julian,

Remember that you probably have a ratio of 3:1 (or more) between the force on your ram and the end of the flipper arm, and your ram may not be vertical. This will reduce the lifting force more. If you have not bought it yet, I would go for a 16barg ram. It is well worth the extra cost. (I could even sell you mine cheap, if you were content with a 125mm stroke.)

Jeremy

[julian]

Low pressure cylinders/high pressure systems

This one is costing me £20. It will do for now. Once I have a working system, then I can look to upgrade. This is my first time with CO2 so Ill take it easy. Im building for a middleweight. Its a matter of can I get under Typhoon, rather than how high can I flip it.